Amazon Great Indian Festival sale is almost here. The sale will go live tonight at 12pm for Prime members. For all users, the sale will start on September 23. This year, the Amazon festive sale will last eight days and will continue till September 30. Amazon has announced unlimited cashback for Amazon Pay ICICI Bank credit card holders. Buyers will also get a chance to redeem Amazon diamonds for cash back rewards in the sale. Bank offers during the sale include 10% instant discount on purchases made using SBI credit and debit cards.